Piano-action



(No Model.)

0. SOHELLER.

PIANO ACTION.

No. 600,680. Patented Mar. 15,1898.

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UNITED STATES PATENT @EEicE.

OS\VALD SCHELLER, OF PHILLIPS, .VLCONSIN.

PiANCl-ACTIQEQ.

SPECIFICATION forming part of Letters Patent No. 600,680, dated March 1 5, 1898.

Application filed August 9, 1897.

To ctZZ whom it may concern..-

Be it known that I, OswALD ScHELLER, of Phillips, Price county, W'isconsin, have invented a new and useful improvement in up right-piano actions having less friction and fewer pieces to get out of order than any action now in use, which is fullyset forth in the following specification and drawings.

My invention relates to an improved pianoaction particularly for upright pianos.

It has for its object, among other things, to reduce friction to the minimum and to greatly simplify the construction and lessen the nu mber of parts; also, to secure positive and responsive action of the hammer and to certainly or effectively guide the several parts in their movements.

To these ends the invention consists of the sundry combinations of parts, including their construction and arrangement, all substantially as hereinafter more fully disclosed, and specifically pointed out in the claims.

In the accompanying drawings,illustrating the preferred form of carrying out my invention, Figure 1 is a side elevation thereof with the hammer in its initial position. Fig. 2 is a similar view, the key being still depressed, with the hammer in position for producing an immediately repeating stroke.

Latitude is allowed herein as to details, as these may be changed without departing from the spirit or principles of my invention.

1 is the rocker, actuated from or by the key; 2, the lifter, letinto and moved by said rocker and limited in its movement by the shoulder B on said rocker, the latter also being felted thereat, and 3 is the jack, connected or pivoted to said lifter, as at D, also by a spring 1.

The lifter 2 has fixed to it at right angles an arm 2, connected or pivoted to the lower end of the damper-lever G, as at C, of the usual construction.

The hammer 4 has secured to its lower end the hammer-butt 4, pivoted in position in the usual manner and thrown into its initial position by the reaction of a preferably fiat spring 43 as the key is released. The hammer-butt 4 is stepped or shouldered upon its front lower portion, as at I, and felted thereat to lessen or reduce friction, and the jack 3 is reduced or narrowed at its extreme upper end, as at E, to adapt it to engage the shoulder I of said Serial No. 647,665. (No model.)

hammer-butt, and is offset or shouldered and felted, as at G, opposite the similarly-felted lower end J of the hammer-butt. The 11ammer-butt is provided with an extension or projection H at its lower end, adapted to be engaged by the felted end of the regulatingscrew F to cause the escape of the upper end E of the jack 3 from the notch or shoulder of the hammer-butt. The hammer-butt has also secured to its front side, as at N, an offsetstop 5, suitably felted at its offset, as also upon its inner side, where it receives the reduced upper end E of the jack 3 when it assumes Fig. 2 position, said upper end portion E also having a guide pin or stud L working in an oblong slot M in the stop 5 to limit or prescribe the relative movement of these parts and to provide for the ready reassembling of the same when removed for any cause.

It will be seen that, assuming the parts to be in their initial position, as disclosed in Fig. 1, by depressing or actuating the key the hammer will immediately after thus being caused to strike or engage the string of the instrument assume the position of Fig. 2, to immediately follow up or supplement that stroke with a repetition stroke by slightly releasing the fore end of the key-lever. The upper end portion E of the jack 3 instantly after the hammer has given the initial stroke will be deflected from the shoulder I of the hammer-butt at, and the parts consequently assume the Fig. 2 position to permit said supplemental or repetition stroke, the parts then upon the release of the key again assuming their original Fig. 1 position.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is

1. In a piano-action, the combination of the damper with its lever, the lifter having the fixed arm connected to said lever, the jack connected to the upper end of said lifter, and the hammer-butt, with its hammer, articulated to said jack, substantially as set forth.

2. In a piano-action, the combination of the yieldingly-connected lifter and jack, and the hammer-butt, said jack having a reduced extreme upper end and offset just below said end, and said hammer-butt having a stepped front lower end, adapted to be engaged by the upper reduced end of said jack, and havshort distance therebelow, and provided with a regulating-screw and a guide pin or stud, and the han1n1er-butt having a lower front end stepped portion and shouldered extreme lower end, and provided with a pendent pr0- j eetion, adapted to be engaged by said regulating-screw, and an offset-stop adapted to reoeive said guide pin or stud, substantially as setforth.

OSXVALD SCI'IELLER.

\Vitnesses:

E. W. l\'[URRAY, W. F. HENRY. 

